Nonlinear frequency response analysis of dehydration phenomena in polymer electrolyte membrane fuel cells
- authored by
- Thomas Kadyk, Richard Hanke-Rauschenbach, Kai Sundmacher
- Abstract
Dehydration phenomena in a PEM fuel cell were investigated by nonlinear frequency response analysis (NFRA) in a differential H2/H2 cell. The linear H1,0 spectra, which are equal to classic EIS spectra, showed not only an increase of the membrane resistance but also an increase of the anode reaction resistance, caused by dehydration leading to the decrease of the protonic conductivity of the polymer network in the catalyst layer. With this, active sites with long protonic pathes to the membrane become inactive. In order to further clarify this effect, modelling work was used. Therefore, proton transport was incorporated into an existing model of a differential H2/H2 cell. Finally, the key features of NFRA spectra under dehydration and CO poisoning are compared in order to discuss the suitability of NFRA for unambiguous diagnosis of PEMFC. It can be seen that while the linear spectrum is not sufficient to distinguish between both cases, the second order frequency response functions can be used for discrimination.
- External Organisation(s)
-
Max Planck Institute for Dynamics of Complex Technical Systems
Otto-von-Guericke University Magdeburg
- Type
- Article
- Journal
- International Journal of Hydrogen Energy
- Volume
- 37
- Pages
- 7689-7701
- No. of pages
- 13
- ISSN
- 0360-3199
- Publication date
- 05.2012
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment, Fuel Technology, Condensed Matter Physics, Energy Engineering and Power Technology
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.1016/j.ijhydene.2012.01.148 (Access:
Unknown)
